/* =====================================================================
   WAIFI — UI Components (components.css)
   ---------------------------------------------------------------------
   Reusable UI components used across the whole site. Every component
   references tokens (variables.css) — no raw hex/px. Shared state loop:
   :hover (transition-fast + lift/scale), :focus-visible (focus ring),
   :active, :disabled (opacity .5 + not-allowed). AA contrast: brand
   yellow/green-500 are backgrounds only; text/icons use -600 variants.
   Load order: 4th. Selector depth ≤ 3; classes only; no !important.
   ===================================================================== */

/* ======================================================
   1. BUTTON COMPONENT
   Base + variants (primary/secondary/outline/ghost) + states + sizes.
====================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    text-decoration: none;
    white-space: nowrap;
    border: var(--border-width) solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    min-height: 44px;
    transition: background-color var(--transition-fast),
                color var(--transition-fast),
                border-color var(--transition-fast),
                box-shadow var(--transition-fast),
                transform var(--transition-fast);
}

.btn:hover {
    text-decoration: none;
    transform: scale(1.03);
}

.btn:active {
    transform: translateY(1px);
}

.btn:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}

.btn:disabled,
.btn[aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    pointer-events: none;
}

/* Primary — brand yellow */
.btn--primary {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
    border-color: var(--color-primary);
}
.btn--primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-text-on-primary);
}

/* Secondary — solid green */
.btn--secondary {
    background-color: transparent;
    color: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
}
.btn--secondary:hover {
    background-color: var(--color-secondary-hover);
    border-color: var(--color-secondary-hover);
    color: var(--color-white);
}

/* Outline — bordered, neutral text */
.btn--outline {
    background-color: transparent;
    color: var(--color-heading);
    border-color: var(--color-border-strong);
}
.btn--outline:hover {
    background-color: var(--color-surface-alt);
    border-color: var(--color-heading);
    color: var(--color-heading);
}

/* Ghost — no border, transparent */
.btn--ghost {
    background-color: transparent;
    color: var(--color-heading);
    border-color: transparent;
}
.btn--ghost:hover {
    background-color: var(--color-surface-alt);
    color: var(--color-heading);
}

/* Sizes */
.btn--sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    min-height: 36px;
}
.btn--lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-body-lg);
    min-height: 52px;
}
/* Full-width variant (CTA on mobile) */
.btn--block {
    width: 100%;
}

/* Icon-only button (hamburger, back-to-top) — square 44px target */
.btn--icon {
    padding: 0;
    width: 44px;
    height: 44px;
    gap: 0;
}

/* ======================================================
   2. CARD COMPONENT
   Base surface shared by all card variants. Hover lift opt-in.
====================================================== */
.card {
    display: flex;
    flex-direction: column;
    padding: var(--space-5);
    background-color: var(--color-surface);
    border: var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast),
                box-shadow var(--transition-fast),
                border-color var(--transition-fast);
}

.card--hover:hover,
.card--hover:focus-within {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

/* Feature card — icon + title + text (Keunggulan) */
.feature-card {
    text-align: center;
    align-items: center;
}
.feature-card__title {
    margin-top: var(--space-3);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-h4);
}
.feature-card__text {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
    text-align: center;
}

/* Info card — generic icon + title + body */
.info-card__title {
    margin-top: var(--space-3);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-h4);
}
.info-card__text {
    color: var(--color-muted);
}

/* Contact card — icon + label + value (Kontak) */
.contact-card {
    text-align: center;
    align-items: center;
}
.contact-card__title {
    margin-top: var(--space-3);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-h4);
}
.contact-card__value {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
}
.contact-card__link {
    color: var(--color-secondary-hover);
    font-weight: var(--font-weight-semibold);
}
.contact-card__link:hover {
    color: var(--color-secondary);
}

/* Pricing card — offer block (Paket). Base layout; featured highlight. */
.pricing-card {
    position: relative;
    align-items: center;
    text-align: center;
    gap: var(--space-2);
}
.pricing-card__name {
    font-size: var(--font-size-h4);
    color: var(--color-heading);
}
.pricing-card__speed {
    font-family: var(--font-heading);
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-bold);
    color: var(--color-secondary-hover);
}
.pricing-card__price {
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-bold);
    color: var(--color-heading);
}
.pricing-card__unit {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-regular);
    color: var(--color-muted);
}
.pricing-card__cta {
    margin-top: var(--space-4);
    width: 100%;
}
/* Featured plan — stronger border + accent (DESIGN_SYSTEM §4.2).
   Scales up slightly + deeper shadow so the "Paling Populer" plan
   reads as the recommended choice. AA-safe: border uses brand green-500
   (decorative), label text stays on -600. */
.pricing-card--featured {
    position: relative;
    border-color: var(--color-secondary);
    border-width: 2px;
    box-shadow: var(--shadow-hover);
}
@media (min-width: 48rem) {
    .pricing-card--featured {
        transform: scale(1.03);
        z-index: var(--z-base);
    }
}
/* Brand tinted top accent strip */
.pricing-card--featured::before {
    content: "";
    position: absolute;
    inset-block-start: 0;
    inset-inline: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-start-start-radius: var(--radius-xl);
    border-start-end-radius: var(--radius-xl);
}
/* Re-anchor the "Paling Populer" badge above the accent strip */
.pricing-card--featured .badge--popular {
    position: relative;
    margin-top: var(--space-2);
}

/* ======================================================
   3. BADGE COMPONENT
   Pill labels. Semi-transparent bg via color-mix(); AA-safe text.
====================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1.4;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge--primary {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
}
.badge--success {
    background-color: var(--color-success-soft);
    color: var(--color-success);
}
.badge--popular {
    background-color: var(--color-secondary-hover);
    color: var(--color-white);
}
.badge--info {
    background-color: var(--color-info-soft);
    color: var(--color-info);
}
.badge--warning {
    background-color: var(--color-warning-soft);
    color: var(--color-warning);
}
.badge--new {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
}

/* ======================================================
   4. NAVIGATION COMPONENT (styling only — no JS)
   Links, active state, logo, toggle + sticky placeholder.
====================================================== */
.nav-link {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-heading);
    border-radius: var(--radius-md);
    transition: color var(--transition-fast),
                background-color var(--transition-fast);
}
.nav-link:hover {
    color: var(--color-secondary-hover);
    text-decoration: none;
}
.nav-link:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}
/* Active link — set via ScrollSpy / aria-current in JS phase */
.nav-link[aria-current="page"],
.nav-link.is-active {
    color: var(--color-secondary-hover);
    font-weight: var(--font-weight-semibold);
}

/* Logo area */
.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-h4);
    color: var(--color-heading);
    text-decoration: none;
}
.logo:hover {
    text-decoration: none;
    color: var(--color-heading);
}
/* Logo image (header SVG wordmark + footer monochrome) */
.logo__img {
    display: block;
    height: 32px;
    width: auto;
}
.logo__img--footer {
    height: 36px;
    margin-bottom: var(--space-3);
}

/* Mobile toggle (button) — hidden on desktop via section layout */
.nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: var(--color-heading);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
}
.nav-toggle:hover {
    background-color: var(--color-surface-alt);
}
.nav-toggle:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}

/* Sticky state placeholder — JS toggles .is-scrolled on header.
   Visual behaviour (transparent→solid) wired in sections.css. */

/* ======================================================
   5. ACCORDION COMPONENT (FAQ) — Scannable disclosure
   Styling only; .is-open toggled by JS (accordion.js).
   Each item is a STANDALONE premium card (rounded-3xl, soft shadow,
   thin border, white surface) with equal vertical rhythm between them.
   The QUESTION is the always-visible card title (bold, large, left).
   The plus icon sits right and vertically centred.
   ONLY the answer is hidden: it fades in & slides up on open.
   Symmetry goals: uniform header height closed OR open, zero-height
   sealed panel when closed, GPU-friendly 300–400ms motion, no
   display:none / visibility used anywhere.
====================================================== */
.accordion {
    /* The list itself is just a stack — card chrome lives on each
       .accordion__item so every FAQ is its own floating card. */
    display: flex;
    flex-direction: column;
    gap: var(--space-4);              /* equal spacing between every card */
}

/* ---- The card -------------------------------------------------------- */
.accordion__item {
    background-color: var(--color-surface);
    border: var(--border);                       /* soft border */
    border-radius: var(--radius-3xl);            /* large border radius */
    box-shadow: var(--shadow-sm);                /* soft resting shadow */
    overflow: hidden;                            /* clips content to radius */
    transition: box-shadow var(--transition-slow) var(--ease-out),
                border-color var(--transition-slow) var(--ease-out);
}

/* Hover lifts the whole card a hair — premium affordance */
.accordion__item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
}
/* Open card "pops": strongest shadow + brand-tinted border */
.accordion__item.is-open {
    box-shadow: var(--shadow-lg);
    border-color: color-mix(in srgb, var(--color-secondary) 45%, var(--color-border));
}

/* <dt> header: kill browser default margins so headers never shift.
   Width 100% so the clickable button fills the whole row. */
.accordion__header {
    margin: 0;
    display: block;
}

/* ---- The trigger (button) ------------------------------------------- */
.accordion__trigger {
    display: flex;
    align-items: center;                          /* icon vertically centred */
    justify-content: space-between;
    gap: var(--space-4);
    width: 100%;
    /* Uniform padding → every header is the SAME height, closed or open.
       Never animate this; the row height must stay rock-steady so closed
       cards stay perfectly symmetrical and even. */
    padding-block: var(--space-4);
    padding-inline: var(--space-5);
    text-align: left;
    background: transparent;
    border: none;
    cursor: pointer;
    min-height: 44px;                            /* touch target (a11y) */
    transition: background-color var(--transition-fast) var(--ease-in-out);
}
.accordion__trigger:hover {
    background-color: var(--color-surface-alt);
}
.accordion__trigger:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: -3px;
}

/* ---- The QUESTION (card title, always visible) ----------------------
   Large, bold, left aligned, high-contrast — reads as the card title.
   No animation: it's the permanent scannable surface. */
.accordion__question {
    margin: 0;
    font-family: var(--font-heading);
    font-size: var(--font-size-body-lg);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-heading);
    transition: color var(--transition-slow) var(--ease-in-out);
}
/* Active question picks up the brand accent colour */
.accordion__item.is-open .accordion__question {
    color: var(--color-secondary-hover);
}

/* ---- Plus icon → rotates 135° into an "×" on open ------------------- */
.accordion__icon {
    flex-shrink: 0;
    width: 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--color-secondary-hover);
    background-color: var(--color-secondary-soft);
    transition: background-color var(--transition-slow) var(--ease-in-out),
                color var(--transition-slow) var(--ease-in-out),
                transform var(--transition-slow) var(--ease-in-out);
}
/* Rotate the whole icon chip 135° so the + reads as × (GPU-cheap single
   transform on one composited layer). */
.accordion__item.is-open .accordion__icon {
    background-color: var(--color-secondary);
    color: var(--color-white);
    transform: rotate(135deg);                    /* + → × */
}

/* ---- Panel: SEALED when closed --------------------------------------
   grid-template-rows: 0fr + overflow:hidden on the row = true zero
   height, so the closed answer contributes NOTHING to layout (no padding
   leak, no text bleed). The inner wrapper carries the padding and the
   answer, which fades/slides in on open. */
.accordion__panel {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--transition-slow) var(--ease-in-out);
}
.accordion__panel > .accordion__panel-inner {
    overflow: hidden;
    min-height: 0;
}
.accordion__item.is-open .accordion__panel {
    grid-template-rows: 1fr;
}

/* Inner content — ALL vertical spacing lives here so it animates with
   the row. Closed: zero vertical padding. Open: comfortable breathing
   room. The answer fades in & slides up on open. */
.accordion__panel-inner {
    margin: 0;
    padding: 0 var(--space-5);                     /* closed: zero vertical pad */
}
.accordion__item.is-open .accordion__panel-inner {
    padding-block: var(--space-2) var(--space-5); /* comfortable spacing */
}

/* Answer — appears below the question; medium size, comfortable line
   height, neutral gray, easy to read. Fades in & slides up on open. */
.accordion__answer {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    line-height: var(--line-height-relaxed);
    color: var(--color-muted);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity var(--transition-slow) var(--ease-out),
                transform var(--transition-slow) var(--ease-out);
}
/* Reveal the answer on open. */
.accordion__item.is-open .accordion__answer {
    opacity: 1;
    transform: translateY(0);
}


/* ======================================================
   6. CONTACT COMPONENT — cards + CTA
====================================================== */
/* (contact-card styling lives in §2 Card variants; CTA wrapper below) */
.contact__cta {
    margin-top: var(--space-6);
    text-align: center;
}

/* ======================================================
   7. FOOTER COMPONENT (structure + styling, not page layout)
====================================================== */
.footer__tagline {
    color: var(--color-text-on-dark);
    font-size: var(--font-size-sm);
    opacity: 0.85;
}
.footer__heading {
    color: var(--color-text-on-dark);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}
.footer-link {
    display: inline-flex;
    align-items: center;
    color: var(--color-text-on-dark);
    font-size: var(--font-size-sm);
    opacity: 0.85;
    padding-block: var(--space-2);
    min-height: 40px;                       /* comfortable touch target */
    transition: color var(--transition-fast), opacity var(--transition-fast);
}
.footer-link:hover {
    color: var(--color-primary);
    text-decoration: none;
    opacity: 1;
}
.footer-link:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 2px;
}
.footer__copyright {
    color: var(--color-text-on-dark);
    font-size: var(--font-size-sm);
    opacity: 0.7;
    text-align: center;
}
/* Social placeholder — icon links row */
.footer__social {
    display: inline-flex;
    gap: var(--space-3);
}
.footer__social .footer-link {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: var(--border-width) solid var(--color-text-on-dark);
    border-radius: var(--radius-full);
    opacity: 0.6;
}
.footer__social .footer-link:hover {
    opacity: 1;
    border-color: var(--color-primary);
}

/* ======================================================
   8. ICON WRAPPER — svg containers (circle/square, outline/filled)
====================================================== */
.icon {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: currentColor;
}
.icon svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    stroke-width: 2px;
    fill: none;
}

/* Inline icon sizing for icon-only controls (Lucide glyphs in markup) */
.nav-toggle__icon {
    width: 24px;
    height: 24px;
}
.accordion__icon svg {
    width: 20px;
    height: 20px;
}
.floating-btn__icon {
    width: 28px;
    height: 28px;
}

/* Icon container with background (feature cards, etc.) */
.icon-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
}
.icon-wrap--circle {
    border-radius: var(--radius-full);
}
.icon-wrap--square {
    border-radius: var(--radius-md);
}
.icon-wrap--outline {
    background-color: var(--color-secondary-soft);
    color: var(--color-secondary-hover);
}
.icon-wrap--filled {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

/* ======================================================
   9. SECTION HEADER COMPONENT
   Consistent eyebrow + title + description for every section.
   (Base .section__head/.section__title/.section__subtitle live in
   layout.css; this is the richer compound component.)
====================================================== */
.section-header {
    max-width: 44rem;
    margin-bottom: var(--space-7);
    text-align: center;
}
.section-header__eyebrow {
    display: inline-block;
    margin-bottom: var(--space-2);
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-secondary-hover);
    background-color: var(--color-secondary-soft);
    border-radius: var(--radius-full);
}
.section-header__title {
    margin-bottom: var(--space-3);
}
.section-header__desc {
    color: var(--color-muted);
    font-size: var(--font-size-body-lg);
}
.section-header--left {
    text-align: left;
    margin-inline: 0;
}

/* ======================================================
   10. CTA COMPONENT — reusable call-to-action block
   Used on Hero, Paket, and Kontak sections.
====================================================== */
.cta {
    text-align: center;
}
.cta--alt {
    text-align: left;
}
.cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
    justify-content: center;
}
.cta--alt .cta__actions {
    justify-content: flex-start;
}

/* ======================================================
   11. LIST COMPONENT
   Check / feature / bullet / number lists.
====================================================== */
.check-list,
.feature-list,
.bullet-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.check-list li,
.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    color: var(--color-text);
    font-size: var(--font-size-body);
}
.check-list li::before,
.feature-list li::before {
    content: "✓";
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    margin-top: 0.125em;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    background-color: var(--color-secondary-hover);
    border-radius: var(--radius-full);
}
.bullet-list {
    list-style: disc;
    padding-left: var(--space-5);
}
.number-list {
    counter-reset: step;
    list-style: none;
    padding-left: 0;
}
.number-list li {
    counter-increment: step;
    position: relative;
    padding-left: var(--space-7);
    margin-bottom: var(--space-4);
    color: var(--color-text);
}
.number-list li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    background-color: var(--color-secondary-hover);
    border-radius: var(--radius-full);
}

/* ======================================================
   12. DIVIDER COMPONENT
====================================================== */
.divider {
    border: none;
    border-top: var(--border);
    margin-block: var(--space-6);
}
.divider--strong {
    border-top: var(--border-width) solid var(--color-border-strong);
}
/* Section divider — wider gap, brand-tinted */
.divider--section {
    border: none;
    height: 1px;
    margin-block: var(--space-8);
    background: linear-gradient(
        to right,
        transparent,
        var(--color-border) 20%,
        var(--color-border) 80%,
        transparent
    );
}

/* ======================================================
   13. FORM FOUNDATION (uiux.md §21)
   Base field styles. Full form builds in later phase.
====================================================== */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
input[type="search"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-body);
    font-size: var(--font-size-body);
    color: var(--color-text);
    background-color: var(--color-surface);
    border: var(--border-width) solid var(--color-border-strong);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    min-height: 44px;
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast);
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: none;
    border-color: var(--color-secondary-hover);
    box-shadow: 0 0 0 3px var(--color-success-bg);
}

input[aria-invalid="true"],
textarea[aria-invalid="true"],
select[aria-invalid="true"] {
    border-color: var(--color-error);
}
input[aria-invalid="true"]:focus-visible,
textarea[aria-invalid="true"]:focus-visible,
select[aria-invalid="true"]:focus-visible {
    box-shadow: 0 0 0 3px var(--color-error-bg);
}

input:disabled,
textarea:disabled,
select:disabled {
    background-color: var(--color-surface-alt);
    opacity: 0.6;
    cursor: not-allowed;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input[type="checkbox"],
input[type="radio"] {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--color-secondary-hover);
    cursor: pointer;
}

select {
    appearance: none;
    background-image: none;
    cursor: pointer;
}

label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-heading);
}

.field {
    margin-bottom: var(--space-4);
}

.field__error {
    display: block;
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

/* ======================================================
   14. FLOATING BUTTONS (WhatsApp + back-to-top)
   Shared base; position fixed (z-index token) set in sections.css.
====================================================== */
.floating-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-floating);
    transition: transform var(--transition-fast),
                box-shadow var(--transition-fast);
}
.floating-btn:hover {
    transform: scale(1.06);
}
.floating-btn:focus-visible {
    outline: 3px solid var(--color-focus-ring);
    outline-offset: 3px;
}
.floating-btn--whatsapp {
    background-color: var(--color-success);
    color: var(--color-white);
}
.floating-btn--top {
    background-color: var(--color-heading);
    color: var(--color-white);
}